Iron Sensor

Discussion in 'General Electronics Chat' started by fahadatnet, Aug 10, 2005.

  1. fahadatnet

    Thread Starter New Member

    Dec 22, 2004
    I want to make a sensor which can sense iron piece(3cm*3cm)3cm under sand. The sensor should be such that it doesn't sense other iron pieces which are placed aprox. 5cm away from each other(considr pieces placed at each corners of a square).

    Plz. tell me some websites available for making such circuits.

    Thanks in advance.
  2. shreyas_bhat

    Active Member

    Jul 26, 2004
    You might want to try the conventional metal detectors (with beat frequency oscillators), that give an output in the audible range in response to the detection of any metal object. The range you require needs some precise electronics though.

    Here's a link to building a metal detector from scratch.

    However, this is still not a complete solution to ur problem of precision detection.